- Headphones / Earphones
- Microphones
- Wireless Equipment
- Speakers
- Power Amps
- Mixers
- Processors
- Portable PA Systems
- Recorders
- Karaoke
- Guitars
- Basses
- Ukuleles
- Drums & Percussion
- Keyboards
- Wind Instruments
- String Instruments
- Japanese Instruments
- Harmonica, Other
- DTM・DAW
- DJ & VJ
- Stands
- Cables & Connectors
- Racks & Cases
- Lighting
- Stage & Truss
- Video Equipment
- Power Supplies
- Studio Furniture
- Household Items, Other
M
- M-AUDIO
- MAAG AUDIO
- MaAmAa
- MACKIE
- MAD PROFESSOR
- MADRIX
- MAGIX
- Magma Bags
- MAGNA CART
- MAHALO
- MAIKAI
- MAK crazy sound technology
- MAKE MUSIC
- Make Noise
- Malekko Heavy Industry
- Malletech
- MANDARIN ELECTRON
- MandarinEs
- MANIKIN ELECTRONIC
- Manlay Sound
- MANLEY
- marantz Professional
- MARCA
- Marco Bass Guitars
- MARKACOUSTIC
- MARKBASS
- MARMADUKE
- MARSHALL
- MARTIN
- MARTINEZ
- MARUMO
- MASELEC
- MASF Pedals
- MASTER 8 JAPAN
- MASTERY BRIDGE
- Mastro Valvola
- MATCHLESS
- Matthews Effects
- MAXON
- MAYONES
- McDSP
- MCINTYRE
- MD Guitars
- MEC
- MEE audio
- MEIKOSHA
- MEINL
- MELLOTRON
- Melo Audio
- MENATONE
- Mercy Seat
- Meridian Guitars
- Meris
- MESA BOOGIE
- METRIC HALO
- MI AUDIO
- Mi-Si
- Mic W
- Michael Kelly guitars
- Mick's Picks
- MICROPHONE MADNESS
- MicW
- mid-fi electronics
- MIDAS
- MIDDLE ATLANTIC
- MIDIPLUS
- MIDITECH
- Mikme
- Milkman Sound
- MILLENNIA
- Miraphone
- Mission Engineering
- Misty
- Miura guitars
- MIXMAN
- MIYAZAWA FLUTES
- MJC Ironworks
- Modal Electronics
- MODARTT
- Modor
- MODULUS
- MOEN
- MOGAMI
- MOGAN MICROPHONES
- Mohog Audio
- MOISS
- MOJAVE AUDIO
- MOJO HAND FX
- Mojotone Pickups
- Monkey Banana
- MONO
- MONSTER
- MONTREUX
- Moody Sounds
- MOODY STRAPS
- MOOER
- MOOG
- MOOLLON
- Moon Custom Guitars
- MOORADIAN
- MORIDAIRA
- MoriMori
- MORLEY
- Morningstar FX
- MORRIS
- MOTU
- movio
- MR.BLACK
- MTD
- Mtech by Malletech
- MU-FX
- MUSIC LAB
- MUSIC MASTER
- MUSIC NOMAD
- MUSICMAN
- MUSICOM LAB
- MUSICWORKS
- Mutable Instruments
- MUTEC
- MUTEKKI
- MUTIO
- MUTORY
- MXL
- MXR
- MythFX